tvx tests silently fail during GitHub Actions build

[kleag]

Describe the bug
During github actions build, tvx is executed to check errors on xml analysis. Currently, it fails without causing a build error which is wrong.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://github.com/aymara/lima/runs/6770311102?check_suite_focus=true#step:8:13852
2. See that it failed without causing an error:

#42 [37/44] RUN /bin/bash -c "set -o pipefail && tvx --language=eng --language=fre test-fre.xmlreader.xml 2>&1 | tee tvx-fre.log"
#42 2.612 process tests in  "test-fre.xmlreader.xml"
#42 2.614  : Common::AbstractProcessingClient : 2022-06-07T09:03:39.219 ERROR 0x55ec1dc92be0 "/src/lima/lima_common/src/common/Handler/AbstractProcessingClientHandler.h:52: AbstarctProcessingHandler::no Client for clientIdTITLE" 
#42 2.614 caught LimaException : 
#42 2.614 /src/lima/lima_common/src/common/Handler/AbstractProcessingClientHandler.h:52: AbstarctProcessingHandler::no Client for clientIdTITLE
#42 2.614 
#42 2.614 =========================================================
#42 2.614 
#42 2.614   TestReport :   test-fre.xmlreader.xml 
#42 2.614 
#42 2.614 	type           	success	cond.	failed	total
#42 2.614 ---------------------------------------------------------
#42 2.614 	bloquant       	0	0	0	1
#42 2.614 ---------------------------------------------------------
#42 2.614 	total          	0	0	0	1
#42 2.614 =========================================================

Expected behavior
The GitHub Action should stop on error

Thanks to @romaricb for pointing out this issue.